Authorize and Affirm

Authorize

Authorize verb - To give official or legal power to.
Usage example: only the school nurse is authorized to give any necessary shots

Affirm is a synonym for authorize in approve topic. In some cases you can use "Affirm" instead a verb "Authorize", when it comes to topics like permit, ratify.

Affirm

Affirm verb - To state as a fact usually forcefully.

Authorize is a synonym for affirm in approve topic. Sometimes you can use "Authorize" instead a verb "Affirm", if it concerns topics such as ratify.
Cite this Source
Affirm and Authorize. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/authorize/affirm
Authorize & Affirm. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/authorize/affirm>.
Affirm or Authorize. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/authorize/affirm.
Google Ngram Viewer shows how "authorize" and "affirm" have occurred on timeline